Effective Teacher Evaluation

I'm fortunate to be heading down to DC in early Jan to advise Rhode Island (!) on effective teacher evaluation.  There's an avalanche of positions on "the effective teacher," though not all of it is in agreement. I know CTQ has some white sheets on this topic, but I'd also like to hear from a few more teachers.

If you could describe an effective teacher (Part 1), what words would you use -- and how would you assess effective teaching (Part 2)?